150*25mm Rot Resistant Composite WPC Decking Custom Length

150*25mm Rot resistant custom length traditional composite WPC decking

Product Summary

This professional layout introduces the rot resistant, custom length traditional composite WPC decking engineered for demanding municipal boardwalks, public parks, and eco-tourism trails. By deeply blending wood fibers with protective polymers, it completely eliminates fungal decay and rot. Supporting fully customized length specifications, it significantly reduces on-site cutting waste and installation time. This overview directly addresses the headaches of timber decay and high material scrap rates, delivering a highly efficient and dependable engineering solution.

Product Features

• 100% Core-to-Surface Rot Resistance

• Unlike premium second-generation decking that relies only on an outer cap, our traditional Gen-1 WPC decking features a homogenous mix where every wood fiber is thoroughly encapsulated by polymer resin. This provides built-in rot resistant defense against continuous moisture, water pooling, and fungal attacks.

• Precision Custom Length Optimization

• We offer flexible custom length manufacturing tailored directly to your project’s blueprints. Contractors can order the exact lengths required for their joist spans, eliminating the massive material waste, messy on-site cutting, and excessive labor hours typical of rigid standard-size planks.

• Uniform Mechanical Strength

• The solid or heavy-wall structural composition ensures the material density is entirely uniform. It delivers dependable compression and flexural strength, resisting structural degradation or hollow splitting over years of public foot traffic and seasonal weathering.

Technical Specification

Certification

WPC vs. Solid Wood

How to Install

1. Subframe Spacing (Max 350mm)

Install your joists (wood or aluminum) on a level, draining foundation. Joist spacing must be a maximum of 350mm center-to-center to prevent the deck from sagging.

2. Lock the First Board

Screw Starter Clips into the edge of each joist. Slide the groove of your first WPC board firmly into these clips to lock the outer perimeter without surface screws.

3. Install Center Clips

Slide Hidden Fastening Clips into the inner groove of the board at every joist intersection and screw them down. These clips automatically create the mandatory 5mm side-to-side expansion gap. Slide the next board into place and repeat.

4. Manage End-to-End Joints (Double Joists)

Where two board ends meet:

• Must use Double Joists: Each board end must rest on its own independent joist and clip.

• Leave an Expansion Gap: Leave a 5mm to 8mm end-to-end gap so the boards can expand in summer without buckling.

5. Perimeter Wall Gap & Fascia

• Wall Clearance: Always leave a 10mm gap between the decking and any brick wall or solid structure.

• Finishing: Cover exposed hollow edges by screwing on a WPC Fascia Trim around the perimeter.

Application Gallery

Colors

Our Factory

FAQ

Q1: How does an uncapped WPC decking achieve premium rot resistant performance without an outer shield?

A1: The rot resistant performance comes from its homogeneous manufacturing process. During extrusion, the high-density polymers and fine wood fibers are completely cross-linked under extreme pressure. Because the polymers coat every organic particle, water and mold cannot rot the wood components inside.

Q2: What is the minimum order volume or benefit of ordering a custom length for a commercial project?

A2: Custom length optimization is ideal for large projects (typically over 500-1000 square meters). It directly improves your project's ROI by dropping material scrap rates from a typical 10% down to near 0%, saving contractors thousands in clean-up, disposal, and purchasing costs.

Q3: Will the custom length planks expand and contract more than standard sizes under the hot sun?

A3: All composite materials experience minor thermal movement based on their length. When installing longer custom length boards, our engineering guidelines specify slightly larger expansion gaps at the butt joints. This simple layout adjustment allows the rot resistant boards to shift safely without bowing.

Q4: Can this traditional composite decking be directly installed over wet soil or concrete docks?

A4: Yes. Because it is highly rot resistant and completely impervious to ground termites, it performs beautifully on low-ground patios and damp concrete docks. However, proper under-deck ventilation and correct drainage alignment must be maintained to ensure the joist foundation remains stable over time.

About Us

Haining Vanshine New Materials Co., Ltd. is a premier, innovation-driven WPC manufacturing factory and global exporter specializing in high-performance Wood-Plastic Composite (WPC) building materials. Our fully-owned, modernized production facility is located at No. 88 Sanyou Road, Tongyuan Town, Haiyan, Zhejiang, China, situated at the absolute center of East China’s premium manufacturing hub. As a true, factory-direct source, we are strategically close to both Shanghai Port and Ningbo Port, granting our international buyers seamless logistics and direct ocean shipping advantages.

Vanshine integrates independent R&D, large-scale production, and global sales under one roof. We operate our own advanced manufacturing workshops dedicated to redefining modern architectural spaces with sustainable, low-carbon, and weather-resistant composite materials. Through years of technical expertise and capacity scaling, Vanshine has become the trusted, first-hand supply chain source for building material importers, regional distributors, and commercial contractors worldwide.

Factory-Direct Infrastructure & Core Products

As a true manufacturing facility, Vanshine controls the product quality right from the raw material formulation—fusing eco-friendly polymer resins and refined wood fibers through state-of-the-art, high-pressure thermal extrusion lines. Our factory-direct export catalog includes:

• Interior WPC Wall Panels: Driven by our dedicated indoor high-precision extrusion lines. These fluted and flat profiles offer superior impact resistance, achieving international Class B1 fire retardancy and zero-VOC indoor air safety certifications for instant occupancy.

• Exterior WPC Wall Panels / Cladding: Powered by our industry-leading 360° co-extrusion production lines. The core composite is fully encapsulated in an advanced, high-density polymer armor shield built to withstand heavy UV exposure, torrential rain, and extreme temperature shifts without cracking or fading.

• WPC Decking Panels: Commercial-grade, barefoot-friendly outdoor flooring. Engineered with high flexural strength and excellent anti-slip ratings, our decking is naturally immune to rot, moisture, and termite infestations, making it the top choice for residential patios, commercial poolsides, and public boardwalks.

Why Partner with the Vanshine Factory?

1. Direct-from-Factory Pricing & Massive Capacity

We operate expansive production workshops equipped with multiple automated WPC extrusion and co-extrusion lines, guaranteeing stable monthly output and on-time delivery for high-volume container orders. By completely eliminating trading companies and middleman markups, we deliver the most competitive factory-direct FOB prices to maximize your market profit margins.

2. In-House QC & Full Supply Chain Traceability

Our factory enforces a rigorous, multi-stage Quality Control (QC) matrix covering raw material screening, blend formulation, extrusion temperature calibration, and final packaging. Equipped with specialized in-house laboratory testing tools, we guarantee precise mechanical tolerances and flawless surface finishes across all batches, eliminating post-project customer claims from the source.

3. Dedicated Factory R&D and Custom Tooling (OEM/ODM)

Different global markets demand distinct technical specifications and aesthetics. Backed by our own specialized mold-making workshop and engineering team, Vanshine offers comprehensive OEM/ODM customization. We can rapidly develop custom profile tooling from your drawings or samples, adjust density and profile weights, and match bespoke color palettes or deep 3D wood-grain textures.

4. International Compliance & Audit-Ready Facility

We speak the language of international building codes. Vanshine products are regularly tested by premier third-party laboratories (such as SGS and Intertek), comfortably complying with global ASTM and EN standards for flame retardancy, UV weathering, flexural load, and anti-fungal properties. Furthermore, our factory fully supports on-site audits by international inspection bodies (such as BV, SGS, or TUV), helping you smoothly secure large-scale commercial tenders.

Our Vision

At Haining Vanshine New Materials Co., Ltd., we operate under the core mission: "Empowering Architectural Aesthetics with Factory Quality, Safeguarding Green Living with Composite Innovation." We do not just supply products; we protect your supply chain, elevate your brand's reputation, and maximize project ROI through superior factory engineering.

We warmly welcome global building material importers, wholesalers, and project developers to visit our manufacturing facility in Zhejiang for face-to-face inspections, and establish a long-term, mutually beneficial factory-direct partnership.